“Study of Palm Plant Productivity (Arenga Pinnata merr.) Based on Differences in Companion Plants: Kajian Produktivitas Tanaman Aren ( Arenga Pinnata Merr. ) Berdasarkan Perbedaan Tanaman Pendamping”. 2021. Jurnal Online PERTANIAN TROPIK 8 (3):228-33. https://doi.org/10.32734/jpt.v8i3.9176.